paths property

List<List<List<double>>> paths

Each list of LatLongs creates a polyline

An array of paths, or line segments, that make up the polyline. Each path is a two-dimensional array of numbers representing the coordinates of each vertex in the path in the spatial reference of the view. Each vertex is represented as an array of two, three, or four numbers.

https://developers.arcgis.com/javascript/latest/api-reference/esri-geometry-Polyline.html#paths

Implementation

final List<List<List<double>>> paths;